

#include <stdio.h>

int Add(int x,int y)
{

   return x+y; 



}

int Sub(int x,int y)
{

 return x-y;

}
 

int main()
{
 
 

  


  /** 
   * @bries
   *
   * 
   * @param world\n""
   * 
   * @return 
   */
  /** 
   * @brief
   * 
   * @param world\n""
   */
   printf("hello world\n");

   return 0;



}

